Displacement apparatus



April 8, 1930- A. c. DURDIN, JR 1,753,556

`DISPLCIEIMIEINT APPARATUS Filed Aug. 2, 1926 Patented Apr. 8, 1930 AUGUsTns c. DURDIN, Jn., or CHICAGO, ILLINOIS DISIELA(LEililIEIPIIIv APPARATUS Application led August 2, 1926. Serial No. 126,496.V

This invention relates to displacement .apparatus of that type which employs a r'otor'in connection with water or other liquid for obtaining the pumping action. One of the objects of this invention is to minimize the cen-V trifugal action of the rot-or uponthe water or other liquid so as to reduce vibration and wear. Another object is to simplify apparatus of t-his character, to increase itseliciency, to reduce the number of parts to a minimum and to otherwise improve upon the same. l/Vith these and other objects and advantages inview this invention consists iny a displacement apparatus embodying a casing. having alternately arranged liquid inlet passageways and intermediate fluid inlet passageways all arranged around a common centre, in combination with a rotor mounted in the casing and having a spirally arranged channel through which alternate slugs of said liquid, and intermediate slugs of said Huid are displaced by the action ofthe rotor. Y It further consists in an apparatus as abovedescribed having means for supplying liquidA to the channel of the rotor. It further consists in an apparatus as above described in which the rotor is formed with a plur'alityof spirally arranged channels for receiving alternate slugs of liquid and intermediateslugs of fluidV discharging them in alternate succession. It further consists in theseveral novelfeatures of construction, arrangement and combination of parts hereinafter fully set forth and claimed.

The invention is clearlyl illustrated fin the drl'awilng accompanying this specification, in w 1c Fig. 1 is a central, vertical section illustrat-"i ing a simple embodiment of the present in vention; Fig. 2 is an enlarged, detail, frag'- mental view of the rotor casing androtor; Fig. 3 is a detail, vertical, cross section taken on the line 3 8 of Fig. 2; Fig. 4 is a'detail, vertical, cross section taken on'the line 4--4 of Fig. 2, and Fig. 5 is a detail, horizontal, section taken on the irregular line 5--5 of Fig. 4.

` Referring to said drawing, which illus-A trates a simple embodiment of the invention, the rotor casing is seen at 10, and in the simple form of the invention illustratedin the drawing, comprises a cylindrical casing having an end wall 11 at one end, and a discharge opening 12 at its other end. Within thecasiu isa rotor 13, which is mounted upon aV drive s aft 14, journaled in a bearing 22 in the casing and arranged to be driven from any I suita'ble source of power. 4 j j The rotor islformed with oneor more channels 15 on its circumference, whichy channel or channelsextend from one side of the rotor to the other, the end of each channel adj acen't the end wall 11 of the casing beingthe inlet' end to each channel and the other end of each channel being its discharge end. As a preference, said channel-or channels are spirally arranged around the rotor and may be formed by blades or webs 16 that project out from the body 13a of the rotor. Although the number of channels employed is immaterial to this invention broadly considered I have shown four in number, each channel extending through an arc of 180 degrees around the circumference of the rotor whereby each chan-` nel overlaps its adjacent ones. In the form of therotor shown, the spaces between the adjacent ends o the adjacent blades or vanes comprise the inlet ends ofthe channels, and the spaces between the other ends of the blades or vanes comprise the discharge ends of the channels. v

Between the end wall 11 of the casing and the rotor are alternately arranged liquid in- -let passages 17 andl intermediate tluidjpasz sages 2O all-arranqged around the axis of the' drive shaft 14. he liquidv passages 17V are formed between pairs of walls 18, which project outward from an annular wal-l 19, that surrounds the drive shaft. kSaid walls 18 extendh from the casing wall 10 to the wall 19,1and front wall 1'1 to the rotor, and divide theremainder of the space around the wall 19 into fluid passages 20. As a preference', the bearingbracket 21 `for the drive shaft may havefsecured to it thesleeve portion 22 and said sleeve extends through the space' contained: within annular wall 19. The annular wall 19 may be formed with a transverse 0r end wall 23, which joins with the alternate succession.

sleeve 22 and said space constitutes the main fluidinletpassage andrunsto a fluid inlet opening 25 in which is secured the fluid inlet pipe 26. Ports 27 are formed in the annular Wall 19, and connect the fluid` inlet passage 24: with the several alternate air passages 20. The ends28 of the air passages open directly to the inlet ends'of the channels-of the rotor and form the discharge ports from said iiuid passages 20 to the inlet ends of the channels of the rotor, andktheopen ends-29 of the liquid passages 17 open directly to the inlet ends of said channels of the rotor and constitute the ports through which the liquid is delivered to said channels.

Means are provided'V for supplying the rotor With Water or liquid and any suitable means Vmay be provided for this purpose. For the purposes of illustration, I have illustrated areservoir 30 for containing a body of liquid 3l, which reservoirdelivers liquid to the liquid passages l? of the casing 10.

.To facilitate the circulation of the Water, I

have provided a transverse partition 32, which extends transversely of thereservoir and supports the rotorcasing. Said 'partitionseparates the'inlet sideofthe casing yfrom the discharge side and permits air,

gases or other elastic, fluidsy to escape from theWater or other liquid before the liquid again enters the rotor. Wlhen the apparatus isused as a vacuum pump the reservoir may be open-to the atmosphere. lf used asa com,- pressor the reservoir is closed and a compressed air pipe may be connected thereto andrun to any place Where the compressed fluid is desired. v

In the operation of this apparatus, liquid is supplied to the inlet end of the casing 10, either from the reservoir or from any other suitable source, and when the rotor is.re- Volving, the inlet ends rof the spiral channels pass the discharge ports-of the liquid passages and intermediate fluid passages in The result is that as the inlet ends of each channel passes a liquid port, a slug of liquid enters the channel, and becauseof its intertia is not appreciably carried around bythe channel, but is moved laterally across the rotor by the spiral blade. Vhen` said inlet end of the channel passes the'neXt adjacent fluid port, fiuid enters the channel in the space behindthe slugvof liquid and because of the'partial vacuum .which has beencreated behind the slug of liquid, as the inlet end ofthe channel reaches the next liquid port,aslugof liquid again enters the channel. The continued rotation of the rotora'ctsto dis-V charge the Vliquid slugs and fluid slugs in succession as theyreach the discharge ends of the channels, the elastic fluid 'bubbling up through the liquid `in the reservoir and escapin'gl y Each channel loperatesin the same manner taking in slugs .of liquid and slugs .r of fiuid and discharging them, and by proof construction is possible Without departing from the spirit'of thisinvention; l desire,

therefore, not to limit myself to the exact form' of vthe construction shown and described, but'intend, in the following claims to point out all ofthe invention disclosed 'herein i I claim as new, and desire to secure by Letters Patent: f

l. The combination of a casing having ya stationary cylindrical .Wall forming a cylin-` drical chamber, said casing having also liquid inlet ports and fluid inlet ports leading to said chamber, and a discharge opening leading from said chamber, and rotatory means Within said chamber for causing alternative slugs of liquid; and fluid to flow through said channel 'Without imparting centrifugal force to said liquid and fluid slugs, said means including an open sidedchannel extending inf a circumferential direction part .Way around the rotatory means, the open side of said channel being closed by said stationary cylindrical Wall. 1

2. The combination of a casing having alternate liquid Vinlet ports and intermediate fluid inlet ports, all arranged around a common centre, said casing having a stationary cylindrical Wall forming a cylindrical chamber and having a discharge opening, a rotor mounted to rotate insaid cylindricalfcham'- berbetween said inlet ports and discharge opening and having a spirally arranged open sided channel thereon, extending in a circumferential direction part Way around the same and, containing an inlet end and a discharge end, said stationary cylindrical Wall closing the open sideof said channel and the inlet endof said spiral channel passing across the liquid inlet ports and fluid inlet ports in alternate succession, whereby slugs of liquid and slugsof fluid enter said channel in alternate succession and are discharged through said discharge opening, and a source of liquid supply for said rotor.

3. The combination of a casing having alternate liquid Iinlet lports and intermediate fluid inletports, all arranged around a common'centre, said casing havinga stationary cylindricalz'wall forming a cylindrical .cham-A ber and having a discharge opening, a rotor mounted to rotate in said cylindrical chaminc ber; between said inlet ports and discharge opening andfhaving aplu'rality of overla Aping spirally arranged. 'open sided channe' s inlet end of said spiral channel passing acrossy the liquid inlet ports and fluid'inlet ports in alternate succession whereby slugs of liq uid and slugs of fluid enter said channel in alternate succession and are discharged through said discharge opening, and a source of liquid supply for said rotor.

4. The combination of a casing having alternate liquid inlet ports and intermediate fluid inlet ports, all arranged around a common centre, said casing having a stationary cylindrical wall forming a cylindrical chamber and having a dischargeopening, a rotor mounted to rotate in said cylindrical charnber between said inlet ports and discharge opening and having a plurality of spirally'ar ranged, overlapping blades extending in a circumferential direction part way around the circumference of'said rotor and forming channels thereon, each open sided channel containing an inlet end and a discharge end, stationary cylindrical wall closing the sides of said channels and the inlet end of said` spiral channel passing across the liquid inlet ports and Huid inlet ports in alternate succession, whereby slugs of liquid and slugs of fluid enter and flow through said channel in alternate succession along lines substantially parallel with the axis of t-he rotor and are discharged through said discharge opening with little circumferential action thereon, and a source of liquidsupply for said rotor.

5. The combination of a casing having alternate liquid inlet ports and intermediate iuid inlet ports, all arranged around a common centre, said casing having a stationary cylindrical wall forming a cylindrical chamber andvhavin'g a discharge opening, a rotor mounted to rotate in said `cylindrical chamber between said inlet ports and discharge opening and having a spirally arranged open sided channel thereon, extending in a circumferential direction part Way around the rotor and, containing an inlet endand a discharge end, stationary cylindrical wall closing the open side of said channel and the inlet end of said spiral channel passing across the liquid inlet ports and fluid inlet portsV in alternate succession, whereby slugs of liquid and slugs of fluid enter said channel in alternate succession and are discharged through said discharge opening, a liquid supply reservoir opening to said liquidv inlet ports and supplying liquid thereto.

6. The combination of a casing having alternate liquid inlet ports and intermediate fluid inlet ports, all arranged around Va common centre, said casing having a stationary cylindrical Wall forming a cylindrical chamber and having a discharge opening, a rotor mounted to rotate in said cylindrical chamber between said inlet ports and discharge opening and having a spirally arranged open sided channel thereon, containing an inlet end and a discharge end, said stationary cylindrical wall closing the open side of said channel I and the inlet end of said spiral channel passing across the liquid inlet ports and fluid inlet ports in alternate succession, whereby slugs of liquid and slugs of fluid enter said channel in alternate succession and are discharged through said discharge opening, a liquid supply reservoir in which said .casing is contained and in open communication with said liquid inlet ports and discharge opening.

7. The combination of a casing having alternate liquidl inlet ports and intermediate [iuid inlet ports, all arranged around a comrnon centre, said casing having a stationary cylindrical wall forming a cylindrical chamber and having a discharge opening, a rotor mounted to rotate in said cylindrical chamber between said inlet `ports and discharge opening and having a spirallyarranged open` sided channel thereon,containing an inlet end and a discharge end, said stationary cylindrical wall closing the open side of said channel and the inlet end of said spiral channel passing across the liquid inlet ports and fluid inletlports in alternate succession, whereby slugs of liquid and slugs of fluid enter said channel in alternate succession and aredis charged through said discharge opening, a liquid supply reservoir in which said casing is contained and in open communication with said liquid inlet ports'and discharge opening, and a transverse partition in said reservoir around said casing separating the inlet side thereof from'its discharge side.

8. The combination of a cylindrical casing having an inlet end, a tubular wall therein containing a fluid inlet passageway, wallsextending from said tubular wall and dividing said inlet end of the casingV into alternate liquid passages and intermediatefluid passages, all arranged around a common centre, and terminating in ports, there being fluid ports leading from said fluid inlet passageway to said fluid passages, and said casing having a stationary cylindrical wall forming a cylindrical chamber a rotor having a plurality of spirally arranged open sided channels extending circumferentially part way around the circumference of the rotor, said stationary cylindrical Wall closing the sides of said channels, said rotor mounted to rotate being in said cylindrical chamber in a direction in which one end of the channels cross the ports of said liquid and fluid air passages and a source of liquid supply for said rotor.

AUGUSTUS C. DURDIN, JR. 

